Catena malbec &#39;Clone 14&#39;

ABSTRACT

A special Malbec grapevine clone from Mendoza Argentina, herewith denominated Catena Malbec ‘Clone 14’ which shows a unique vineyard and winemaking profile from the rest of the Malbec grapevine population in Mendoza, Argentina. This Malbec grapevine clone is characterized by its medium cluster size and weight; compact cluster form; medium to small berry size and weight; medium-low vigor; extremely low level of millendrage (shot berries); very high level of polyphenol and tannin; medium aromatic intensity and mid-palate flavor depth.

BOTANICAL/COMMERCIAL CLASSIFICATION

Vitis vinifera L.

VARIETY DENOMINATION

Catena Malbec ‘Clone 14’.

BACKGROUND OF THE INVENTION

Once known as a variety of Bordeux, the Malbec grape is now being cultivated in South America, including Argentina. Malbec grapes produced delicious wines.

Historically, Argentine vintners did not engage in selecting clones. A less than rigorous attention to clonal selection meant that Malbec vineyards in Mendoza consisted of massal populations, a highly heterogeneous, haphazard mix of clones throughout the vineyard. There is a need for Malbec clones with improved quality. based characteristics such as low yield, plant balance, and fruit concentration.

BRIEF SUMMARY OF THE INVENTION

The present invention relates to a newly selected and distinct clone of the Malbec grapevine, Vitis vinifera L., which will hereinafter be denominated as the Catena Malbec ‘Clone 14’. ‘Clone 14’ has medium cluster size and weight; compact cluster form; medium to small berry size and weight; medium to low vigor; extremely low level of millendrage (shot berries); very high level of polyphenol and tannin; medium aromatic intensity and mid-palate flavor depth.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1: Total millendrage of overall Malbec grapevine massal population and selected clones.

FIG. 2: Total polyphenols of overall Malbec grapevine massal population and selected clones.

FIG. 3: Total tannins of overall Malbec grapevine massal population and selected clones.

FIG. 4: Aroma and flavour profile of overall Malbec grapevine massal population and selected clones.

FIG. 5: Photograph showing Catena Malbec ‘Clone 14’.

DETAILED DESCRIPTION OF THE INVENTION

The Malbec grapevine clone of the present invention originated from a very demanding clonal selection carried out in Mendoza, Argentina. The clonal selection process began in 1992 and was conducted solely by Bodegas Esmeralda S.A.

The process began with an identification of different clones of the Malbec grapevine. During three growing seasons, all plants from Lot 18 of Bodegas Esmeralda's Angelica Vineyard, located in the Lunlunta district of the Maipu region of Mendoza, were systematically observed.

The goal was to identify a wide base of genetic profiles. The first criteria were to select those Malbec vines which showed overall good health and good fruit set. The next criterion was diversity, identifying those plants with varying levels of vigor; different dates of budbreak and harvest; and varying sizes of clusters and berries. Malbec vines fitting these criteria were marked for further study.

This preliminary selection process resulted in the identification of 108 different Malbec clonal plants from Lot 18 of Bodegas Esmeralda's Angelica Vineyard, located in the Lunlunta district of the Maipu region of Mendoza. All of the clones were then subjected to the ELISA test to detect for Arabis mosaic virus, Grapevine fleck virus, Grapevine fanleaf virus, Grapevine leafroll associated virus Types 1, 2, 3, and Tomato ringspot virus. The clones were then multiplied from bi-nodal pruned budwood using micro-propagation techniques. This method ensured the overall good health of the multiplied plants.

A total of 51 to 55 plants from each clone successfully passed through the process of propagation and rustication, and having achieved the dimensions necessary to survive in the field, were planted in 1994 in Bodegas Esmeralda's La Piramide vineyard, located in the Agrelo district of the Lujan de Cuyo region of Mendoza. The Malbec grapevine clones were planted at a density of two meters between rows and 1.25 meters between plants and trained to a vertical shoot positioned trellis. They were pruned to a double Guyot system of loading canes with an average of 9 to 12 buds per cane.

The objective of the Malbec grapevine clonal selection was to identify those clones which possessed both vineyard performance and wine quality characteristics which were above the level achieved for the general population when working with massal selections of Malbec grapevines.

The vineyard performance criteria included overall grapevine development, shoot growth rate, plantation failures, dates of budbreak, veraison and harvest, compactness, size, number of clusters, size, number, and millendrage level of berries, susceptibility to mildew, as well as brix, pH, acidity and anthocyanin levels.

Given that the end goal of this selection process was to improve the overall quality of Malbec wine produced, certain elements of the above criteria were given more weight than others:

Color: Plants with overall high anthocyanin counts were given additional weight in the selection. Low anthocyanin count resulted in elimination from the selection.

Brix, Acidity and pH Levels: Proper development of these elements throughout the growing season as well as balance at the moment of harvest were important criteria for selection.

Berry Size: The selection process sought to identify Malbec grapevine clones with a high ratio of skin to juice, generally seeking smaller berries.

Millendrage: Malbec grapevine clones were chosen for low levels of millendrage and shot berries, seeking even fruit set.

In 1997 fifteen clones were selected with optimal vineyard performance (low yields, small clusters, small berries, high polyphenols and low millendrage) and varying yet complimentary flavor profiles. The fifteen clones were vinified separately and characteristics (aroma, concentration, natural acidity, ripening time, typicity, astringency, flavor sensation) were compared.

In 1998 the five best clones were selected using the joint vineyard and wine criteria described above. These clones were sent to University of Adelaide for virus testing, with all results negative.

In 1999 the original 108 clonal selection was planted in Bodegas Esmeralda's Adrianna Vineyard, located at 5,000 feet above sea level in the Gualtallary district of the Tupungato region in Mendoza, Argentina.

In 2002 using the same selection process as originally implemented in Bodegas Esmeralda's La Piramide vineyard, clones 13 and 17 were selected as optimum for this vineyard site and planted in an experimental 3 hectare block.

In 2003 the five selected clones were planted in Bodegas Esmeralda's Nicasia vineyard, located at 3,870 feet above sea level in the Altamira district of the San Carlos region in Mendoza.

In 2007 the five clones selected by Bodegas Esmeralda passed a three year viral field study conducted by the Foundation Plant Services Department at the University of California Davis. They have recently been released from quarantine after having passed all pertinent viral tests and are currently being held at Herrick Vines in California.

DETAILED BOTANICAL DESCRIPTION

Below is a detailed botanical description of Catena Malbec ‘Clone 14’:

-   Vine:     -   -   Generally.—Size. — Medium. Grapevine size as determined on             grapevines growing on a three wire vertical shoot positioned             trellis with the first wire (fruit zone) set 80 cm (31.25             inches) above the ground; the second wire at 1.30 m (50.78             inches) above the ground; and the third wire at 1.8 m (70.31             inches) above the ground. The vine was trained to produce a             grapevine height of 2.32 m (91.33 inches) and a grapevine             spread of 31 cm (12.24 inches).         -   Vigor.—medium vigor. Vigor as measured by weighing prunings             at dormant pruning for cane pruned grapevines (with 12 canes             and an average of 19 buds per cane) was 0.919 Kg.         -   Productivity.—Productive. 2.1 Kg per grapevine as compared             to the average population grapevine which produces 1.55 Kg             per grapevine on grapevines spaced 4.1 ft. (125 cm) by 6.5.             (200 cm).         -   Regularity of bearing.—Regular. Annual pruning of canes is             required for reliable production. -   Canes:     -   -   Size.—Diameter — mature canes. — Medium diameter. medium             vigor. upright in growth habit.         -   Mature canes.—Diameter — internode base. — 8. 1 mm (0.316             inches).         -   Diameter.—internode midpoint. — 7.3 mm (0.285 inches).         -   Diameter.—internode tip. — 3.6 mm (0.14 inches).         -   Diameter.—node base. — 10 mm (0.390 inches).         -   Diameter.—node midpoint. — 12.3 mm (0.48 inches).         -   Diameter.—node tip. — 7 mm (0.273 inches).         -   Internode length.—Base. — 3 cm (2.46 inches).         -   Midpoint.—7.4 cm (2.89 inches).         -   Tip.—7.9 cm (3.08 inches).         -   Average length of canes.—152.1 cm (59.41 inches).         -   Surface texture.—Smooth.         -   Color of mature cane.—Brown. No anthocyanin observed on             mature canes.         -   Buds.—Color. — Brown.         -   Texture.—Smooth.         -   Dormant bud (compound bud or eye).—Width. — At base of cane             3.9 mm (0.152 inches); at midpoint of cane 4.1 mm (0.160             inches) and at tip of cane 3 mm (0.117 inches). The average             number of buds on a current. single-season growth cane is             19.         -   Date of bud break.—October 7 sup.rd. midseason.         -   Young shoots.—Young shoots have cobwebby indument.         -   Diameter of young shoots in spring (measured when shoots are             24 inches).—At base 5.8 mm (0.226 inches). at midpoint 4.5             mm (0.175 inches) and at tip 3.1 mm ( 0.121 inches).         -   Internode length.—4.1 cm (1.60 inches) at 4.sup.th internode             from base.         -   Young shoots.—Color. — Pale yellow green with slight copper             on edge.         -   Stem of shoot tip.—Color. — Green with a slight copper tint             in sun.         -   Shoot.—Shape. — Straight to slightly curved.         -   Shoot tip.—Form. — Open.         -   Tendrils.—Size. — Length — 18.7 cm (7.30 inches).         -   Size.—Diameter — 1.6 mm (0.062 inches).         -   Shape.—Usually biforcated and curled on distal end.         -   Pattern.—Found beginning opposite node 6 and 7 then again at             nodes 9, 10, 12, 13, 15, 16 with this repeating intermittent             pattern to the distal end of the cane.         -   Tendril.—Color immature growth. — Yellow green with slight             copper on tip.         -   Disease resistance.—Susceptible to Odium and Mildew. and             fungicides were applied to the grapevines under evaluation             to control them.         -   Insect resistance.—There has been no insect resistance             detected given that insects are very rare in Mendoza. -   Leaves:     -   -   Size.—Generally. — Leaves simple and alternate. The mid vein             (L1) is 12.3 cm (4.804 inches) long. vein L2 is 10.5 cm             (4.10 inches) long and vein L3 is 7.4 cm (2.89 inches) long.             The angle between the mid vein L1 and L3 is 56 degrees and             between L1 and the 1st vein off L3 is 149 degrees.         -   Average length.—16.6 cm (6.48 inches).         -   Average width.—13.9 cm (5.42 inches).         -   Shape.—Orbicular.         -   Lobes.—Number. — five (5). three (3) without lobes.         -   Color.—Upwardly disposed surface. — Dark green. Upward             surface is glabrous. flat and smooth to slightly bullate.         -   Downwardly disposed surface.—Green Lower surface has short             hairs.         -   Leaf vein.—Light with occasional red on main veins near             center of leaf.         -   Leaf vein.—thickness. — Thickness of mid vein at center of             leaf is 1.7 mm (0.066 inches).         -   Leaf margin.—Serrated with shape of teeth pointed and medium             in size (convex teeth).         -   Petiole sinus.—Half open and “V” shape On mature leaf is 3.7             cm (1.44 inches) deep and 1.3 cm (0.507 inches) wide at             widest point.         -   Anthocyanin.—Main veins. — location. — With occasional red             on main veins near center of leaf.         -   Petiole.—Size. — Medium.         -   Length.—8.8 cm (3.38 inches).         -   Diameter.—2.8 mm (0.109 inches).         -   Color.—Green with occasional red covering.         -   Color.—Young leaf. — upper surface. — Pale green with light             copper and cobwebby indument on upper surface.         -   Young leaf.—lower surface. — Pale green.         -   Shape unfolded.—young leaf. — Concave to flat.         -   Petiole of young leaf.—color. — Medium green.         -   Stipules.—Onion skin. -   Trunk:     -   -   Size.—Large.         -   Height.—Approximately 75 cm (29.3 inches) above the vineyard             floor.         -   Diameter.—14 cm (5.46 inches) as measured just below the             cordon or head point at 40 cm (15.6 inches) above vineyard             floor. -   Flowers:     -   -   Flower.—Size. — generally. — Medium.         -   Unopened.—diameter. — 1.8 mm (0.07 inches).         -   Unopened.—length. — 1.6 mm (0.062 inches).         -   Unopened.—surface texture. — Smooth.         -   Date of bloom.—First bloom November 10.         -   Date of full bloom.—November 17 at 90%.         -   Inflorescence.—Panicle.         -   Cluster size.—At bloom. — Generally. medium.         -   Cluster.—length. — 14.9 cm (5.82 inches).         -   Width.—12.3 cm (4.8 inches).         -   Peduncle.—Length. — 3 cm (1.17 inches).         -   Shape of cluster.—Conical.         -   Calyptra.—Color. — Green.         -   Stamens.—Five (5).         -   Pistil.—Well developed.         -   Ovary.—Color. — Green.         -   Pollen.—Normal. fertile. abundant.         -   Anthers.—Color. — Straw. -   Fruit:     -   -   Maturity when descried.—Ripe for commercial harvesting and             shipment approximately March 10 in Mendoza. Argentina.         -   Cluster.—Size. — cane pruned vines. — 128.9 grams (4.54 oz).         -   Length.—16.84 cm (6.62 inches).         -   Width.—14.2 cm (5.54 inches).         -   Shape.—Conical.         -   Density.—Tight. on average has 97 berries per cluster.         -   Clusters per vine.—16.4         -   Clusters per shoot.—1.3 clusters per shoot.         -   Peduncle.—Size: Length. — Medium. 4.1 cm (1.601 inches).         -   Diameter.—Medium. 4.75 mm (1.85 inches)         -   Color.—Green.         -   Texture.—Smooth. glabrous.         -   Pedicel.—Generally. — There is a medium to good attachment             between the berry and the pedicel.         -   Size.—length. — 5.6 mm (0.218 inches).         -   Size.—diameter. — 0.8 mm (0.031 inches).         -   Color.—Green.         -   Texture.—Glabrous.         -   Brush.—Length. — 1.9 mm (0.074 inches).         -   Brush color.—Green.         -   Berry.—Size. — Medium. avg. 1.01 grams (0.034 oz).         -   Shape.—spherical 1.15 cm (0.449 inches) long and 1.2 cm             (0.468 inches) wide.         -   Color.—Raspberry red.         -   Bloom.—Light.         -   Skin.—Generally. — Thickness. — Medium in thickness.         -   Texture.—Smooth.         -   Tendency to crack.—None.         -   Flesh.—Flesh color. — Translucent and very pale yellow             green.         -   Texture.—Firm. meaty.         -   Juice production.—High.         -   Color of juice.—Clear.         -   Flavor.—Sweet and sub acid flavor.         -   Soluble solids.—24.5%.         -   Titratable acid.—4.1 g/L juice.         -   Aroma.—None.         -   Ripening.—Uniform.         -   Character of seeds.—complete seeds. Seed color is auburn.         -   Use.—wine.         -   Resistance to disease.—No resistance to Mildew and Odium.

Below are some comparative charts to demonstrate the differences found in the selected Malbec grapevine clones.

Table 1 shows how the Catena Malbec ‘Clone 14’ shows different physiological characteristics when compared to other Malbec grapevine clones selected by Bodegas Esmeralda as well as the overall massal population.

TABLE 1 Clone Clone Clone Clone Clone Popula- 13 14 15 16 17 tion Potential 4.2 6.2 3.6 4.1 5.3 3.622 Foliage Sur- face Area m2 N° Shoots 14.3 12.6 12.8 12.8 14.2 12.6 Avg. Shoot 123.0 1152.1 76.0 138.4 141.4 94.3 Length (cm) Pruned Mater- 1144.0 919.8 870.4 978.1 1202.3 9167.4 ial Weight m/g Exposed Sur- 1.64 1.74 1.42 1.53 1.72 0.98 face Area/Pro- duction N° of Leaf 3.6 2.5 2.6 2.9 3.3 2.7 Layers

Clonal Individuality—Shotting (Millendrage)

Malbec has a tendency for shot berries causing problems with homogeneity and cluster ripening. Homogeneity is a key factor for quality. See FIG. 1.

In addition, Table 2 shows some of the physiological characteristics and individuality of the Catena Malbec ‘Clone 14’, when compared to other selected Malbec grapevine clones and the overall Malbec grapevine massal population.

TABLE 2 Cluster Cluster Total Berry No. of Berry Compact Clone Length Weight Weight Berries Weight Index 13 15.29 cm 113.54 gr 110.11 gr 101.1 1.09 gr 0.15 14 16.84 cm 128.9 gr 97.76 gr 97 1.01 gr 0.17 15 16.32 cm 69.42 gr 69.75 gr 65.7 1.06 gr 0.25 16 14.63 cm 119 gr 88 gr 89 0.99 gr 0.16 17  8.32 cm 47.5 gr 37.8 gr 34.2 1.11 gr 0.24 Population 18.23 cm 91.68 gr 85.06 83.11 1.02 0.22

The individuality of this Malbec grapevine clone was also measured in terms of its chemical profile when compared to other selected Malbec grapevine clones and the overall Malbec grapevine massal population. Total polyphenols are shown in FIG. 2. Total tannins are shown in FIG. 3.

The Catena Malbec ‘Clone 14’ was also measured in terms of its aroma and flavor profile when compared to other selected Malbec grapevine clones and the overall Malbec grapevine massal population. The results are shown in FIG. 4.

FIG. 5 is a photograph of the vine with fruit. 

1. A novel and distinct variety of Malbec grapevine clone herein denominated Catena Malbec ‘Clone 14’ having the characteristics described and illustrated herein. 